[quote=@Apollosarcher]
[@HeySeuss] I heard mention of Dark Angels... Perhaps a Ravenwing biker and his companions? If that would be alright.

[/quote]

While the Ravenwing existed in the pre-Heresy/Heresy times, I would be more inclined to work with jetpack-equipped Marines or similar infantry equipment, but I am not sure I want to start with bikes from the getgo. I also think if these Fallen Angels thought that Johnson betrayed the Emperor, they're going to be marked for huntin' after the heresy. 

Still, I'm down, since there is a lot of 'no one actually knows what went on' with the Dark Angels.